I have watched a few movies with the same concept, finding an old letter and trying to search for its recipient or sender, eventually uncovering something extraordinary about them. And the people who search get motivated by how they truly old generation loved.

I do like the concept of the movie, but the editing of the movie just ruins everything. While Jin-tian is talking to Ze-Yang the scene jumps to old times, but everything looked the same whether past or present so I got confused. The old couple story jumps in between without any screen cut or context, they don’t even mention the year. The back and forth between past and present is like spilled coffee all over the place
I felt that the old couple's story had more impact cause they had a more emotional connection.
Present-day JinTian and ZeYang's story was bland and forced with so many emotional traumas as if they were some sinners. if one of them could have acted maturely and adult it would have changed the impact of the movie. They had chemistry but their visuals are too nice that it covered their flawed acting, they could have done better.

The actors who played Lanxin and Joseph Novak were amazing, others were very mediocre honestly maybe because they are newbies.

The scene where Novak and JinTian see each other was very fine and chilling. The ending is satisfying though.